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Note 13 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
  

2021

  

2020

  

2019

 

U.S.

 $805.3  $834.0  $553.9 

Foreign

  70.1   63.5   14.5 

Total income before income taxes

 $875.4  $897.5  $568.4 
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
  

2021

  

2020

  

2019

 

Current:

            

Federal

 $116.8  $111.0  $109.9 

State and local

  21.1   23.1   21.4 

Foreign

  21.4   18.9   14.6 

Total current provision for income taxes

  159.3   153.0   145.9 

Deferred:

            

Federal

  19.8   22.6   (14.3)

State and local

  11.8   7.4   (0.2)

Foreign

  18.2   1.8   (12.9)

Total deferred provision for income taxes

  49.8   31.8   (27.4)

Provision for income taxes

 $209.1  $184.8  $118.5 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

2021

  

2020

  

2019

 

Federal statutory rate

  21.0%  21.0%  21.0%

State and local taxes, net of federal tax benefit

  2.8%  2.7%  2.8%

U.K. legislative rate change impact

  3.8%  1.5%  %

Foreign Derived Intangible Income (FDII)

  (0.9)%  (0.8)%  (1.2)%

Global Intangible Low-taxed Income (GILTI)

  1.5%  %  %

Stock-based compensation

  (3.3)%  (3.7)%  (3.0)%

Earn-outs

  %  %  2.0%

Other

  (1.0)%  (0.1)%  (0.7)%

Effective tax rate

  23.9%  20.6%  20.9%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
  

2021

  

2020

 

Deferred tax assets:

        

Employee wages and other benefits

 $49.0  $56.7 

ASC 842/Deferred rent

  10.5   10.3 

Net operating loss carryover

  18.0   22.7 

Litigation accrual

     31.3 

Capital and other unrealized losses

  1.5   1.6 

Interest expense

  58.7   44.1 

Other

  7.4   12.2 

Total

  145.1   178.9 

Less valuation allowance

  (64.1)  (48.0)

Deferred tax assets

  81.0   130.9 

Deferred tax liabilities:

        

Fixed assets and intangible assets

  (461.6)  (445.3)

Commissions

  (20.2)  (16.6)

Pensions

  (54.1)  (49.4)

Other

  (9.0)  (7.4)

Deferred tax liabilities

  (544.9)  (518.7)

Deferred tax liabilities, net

 $(463.9) $(387.8)
Summary of Operating Loss Carryforwards [Table Text Block]

Years Ending

 

Amount

 
2022 - 2029 $21.9 
2030 - 2034  20.5 
2035 - 2041  112.2 

Total

 $154.6 
Summary of Income Tax Contingencies [Table Text Block]
  

2021

  

2020

  

2019

 

Unrecognized tax benefit as of January 1

 $9.9  $11.5  $17.4 

Gross increase in tax positions in prior period

  1.3   0.5   0.6 

Gross decrease in tax positions in prior period

  (0.1)  (0.2)  (3.3)

Settlements

        (2.4)

Lapse of statute of limitations

  (7.7)  (1.9)  (0.8)

Unrecognized tax benefit as of December 31

 $3.4  $9.9  $11.5